Award Date

1-1-1994

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Geology

Number of Pages

101

Abstract

The Beer Bottle Pass pluton, at the northern end of the Lucy Gray Range, Nevada, is part of a continent-scale belt of 1.4 Ga intrusive rocks that extend from California to Labrador. These granites are conventionally interpreted as anorogenic; however, recent work has documented that some of these plutons may have been deformed during or after emplacement. In the Lucy Gray Range, a series of mylonite zones is spatially associated with the Beer Bottle Pass pluton. An integrated study involving field and laboratory work, was used to distinguish between three possible scenarios for the origin of the mylonites: (1) intrusion into an active shear zone, (2) post-emplacement ductile deformation, and (3) mylonitization during and as a consequence of forcible pluton emplacement. Observations made during this study indicate that forcible intrusion is unlikely and the mylonites are a result of late synkinematic or post emplacement deformation.

Keywords

Clark County; Geological; Gray; Lucy; Mylonitic; Nevada; Northern; Origin; Range; Shear; Significance; Zones

Controlled Subject

Geology

File Format

pdf

File Size

9277.44 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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